Contextualization of the concept of nociplastic pain in irritable bowel syndrome.

The objective of this letter to the editor is to contextualize the concept of "nociplastic pain" in functional digestive disorders, especially in irritable bowel syndrome (IBS); and try to differentiate it from the term central sensitization, increasingly used in the literature, and with notable relevance in the pathophysiology of IBS.

Green discoloration of the urine following sedation with propofol for colonoscopy.

Propofol (2,6-diisopropylphenol) is the most widely used drug for endoscopic procedures under deep sedation. We present the clinical case of an 83-year-old man who underwent a colonoscopy under sedation with propofol, observing a green discolouration of the urine during the procedure.